Don't crash on unresolved weak symbol reference when auditing.

(cherry picked from commit b32b8b4)
git-mirror · Jun 1, 2010 · a0ba5de · a0ba5de
1 parent 6155a84
commit a0ba5de
Show file tree

Hide file tree

Showing 2 changed files with 8 additions and 2 deletions.
diff --git a/ChangeLog b/ChangeLog
@@ -1,3 +1,8 @@
+2010-05-21  Ulrich Drepper  <drepper@redhat.com>
+
+	* elf/dl-runtime.c (_dl_profile_fixup): Don't crash on unresolved weak
+	symbol reference.
+
 2010-05-19  Andreas Schwab  <schwab@redhat.com>
 
 	* elf/dl-runtime.c (_dl_fixup): Don't crash on unresolved weak

diff --git a/elf/dl-runtime.c b/elf/dl-runtime.c
@@ -232,8 +232,9 @@ _dl_profile_fixup (
 				       ? LOOKUP_VALUE_ADDRESS (result)
 					 + defsym->st_value : 0);
 
-	  if (__builtin_expect (ELFW(ST_TYPE) (defsym->st_info)
-				== STT_GNU_IFUNC, 0))
+	  if (defsym != NULL
+	      && __builtin_expect (ELFW(ST_TYPE) (defsym->st_info)
+				   == STT_GNU_IFUNC, 0))
 	    value = ((DL_FIXUP_VALUE_TYPE (*) (void))
 		     DL_FIXUP_VALUE_ADDR (value)) ();
 	}